My first post (or entry),

I'm a new member of Italki. I'm Spanish and I live in Terrassa near Barcelona. I am 39 years old.
This is my first post and I'm sure it has some mistakes, but this is the only way to learn well.

I'm studying a course in UNED. This is a university where the students learn online. At the end of the course, I have to do an exam. The first part is an oral exam. This is will be the worst part for me. And The second part is a written exam.

I am in Italki to looking for somebody someone to help me to improve my English: mainly my oral English. I can help somebody anyone that wants to learn Spanish.

That's all.

Thank you.

Here's a website to help you understand the articles 'a' and 'an', and how to use them in front of certain vowels. Yes, there is the rule that 'an' precedes a word beginning with a vowel, but you have to also consider the sound of the vowel. In the above example, the 'u' of university sounds like a 'y' and has a consonant sound. Therefore, you would use 'a'. If the word were umbrella or uncle, then you would use 'an'.

http://www.grammar.com/a-vs-an-when-to-use/

You would use a ':' after the word English in your sentence "... to help me improve my English: mainly..." instead of a comma because you are joining two independent clauses.

My First Introduction

I'm a new member of Italki. I'm Spanish and I live in Terrassa near Barcelona. I'm 39 years old.
This is my first introduction. Surely it has some mistakes, but this is the only way to learn well.

I'm studying a course at UNED. This is a university where the students learn online. At the end of the course, I have to do an exam. The first part is an oral exam, this is the worst part for me, and the second part is a written exam.

I am on Italki, because I am looking for somebody who will help me to improve my English, mainly my oral English. I can help somebody who wants to learn Spanish.

That's all. Thank you.